[Snakeibf]

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[Snakeibf]

As you can see the throttle bodies are similar in many ways to the CBR125 intake, but the Yuminashi is quite nice and has a polished intake. It uses the same TPS with the IAT integrated into the unit which eliminates the need for the stock one if you choose to use this one instead using the included adaptor cable. It also has a larger intake diameter at 31.05mm vs the cbr at 26.9mm.

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[Snakeibf]

Also needed, to be purchased separately is the intake manifold, which is also polished and looks to be very nice quality.

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[Snakeibf]

yuminashi ECU corrector next to the API tech controller. Other than the sticker, externally they look exactly the same.

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[Snakeibf]

Last,but not least the double springs to prevent valve float and the SX 250 7.1 cam.

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[Snakeibf]

Ill also be putting the yoshimura pipe back on, but for now Im using the faddy bike stainless downpipe and stock Muffler. i didn't really want to make a hole in the header on the yosh header pipe for the Wideband 02 bung.

Here is the sensor installed

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[Snakeibf]

Now to install this stuff...


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[Gecco69]

sweet. cannot wait for the results

 

[ShapeShifter]

Awesome. Too bad they flaked on the head you ordered. If the TB is 31mm, how big is the intake port on the stock head?

 

[Snakeibf]

Awesome. Too bad they flaked on the head you ordered. If the TB is 31mm, how big is the intake port on the stock head?

About 21mm, so were counting on velocity here, not volume. Last i heard they were still testing the head, so they are probably not quite ready for production yet. The head is where we will probably see the biggest gain in combination with these parts.

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[Snakeibf]

Here is the "Yuminashi light bore performance injector" installed on the manifold. I had to drill out the holes on the little spacer to 6mm. They were slightly too small for the injector retainer stock bolts.

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[Snakeibf]

Replacing cam and valve springs.

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[Snakeibf]

Original on right

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[Snakeibf]

The yuminashi cam does not have the compression release like the stock cam. This will put extra strain on the starter, but we will see how it works out. The TB cam in the YX140 i built just made it harder to kick over.

Stock on left


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[Snakeibf]

Cam, valve springs and adaptor plate installed on the head.

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[daddysmut]

i love this!!!

thanks for all the research and updates

 

[averian]

Yikes...that is worrying without a decompression setup. Kicking my KLX110 after a 143 kit install is MUCH harder than stock. I will be interested to see if the starter can handle everything OK. Looks like everything is coming together nicely. : )

 

[ShapeShifter]

Did you get a chance to measure the cam lobes on both cams?

 

[BiG Chris]

Where did you pickup all the parts from?

 

[Snakeibf]

Did you get a chance to measure the cam lobes on both cams?

It did cross my mind, I may measure the lift for comparison tomorrow.

I'm done for today, but will continue tomorrow.